Welcome to today's Space Briefing, a biweekly roundup of the latest national security space news. Top Story Air Force restructures JMS after delays, will feed Space Fence data to legacy systems The Air Force has "restructured" a key upgrade effort for the Joint Space Operations Center Mission System, but is providing little detail on how the program has been reshaped. News & Notes Air Force to award Raytheon risk-reduction contract for airborne FAB-T terminals in early 2019 The Air Force...